Hi Robert, this is my update callback .. And I know for sure it was working. I just did a clean app (modified osgviewer with only this callback installed in the root PagedLODs) and I never see a Paged Out tile ... I am limited to not having the possibility to make a custom DatabasePager or it will go really complicated. The root PagedLOD can have only one or zero children (that is the test database I am testing it against)
struct UpdateCallback : public osg::NodeCallback { UpdateCallback() : _numChildren(0) { } virtual void operator()(osg::Node* node, osg::NodeVisitor* nv) { osg::PagedLOD* plod = dynamic_cast<osg::PagedLOD*>(node); if (plod) { if (plod->getNumChildren() != _numChildren) { _numChildren = plod->getNumChildren(); if (_numChildren) std::cout << "Paged in" << std::endl; else std::cout << "Paged out" << std::endl; } } traverse(node, nv); } protected: int _numChildren; }; On Fri, Jun 3, 2016 at 6:49 PM, Robert Osfield <robert.osfi...@gmail.com> wrote: > Hi Nick, > > There isn't a feature directly built into osg::PageLOD or > DatabasePager for this. > > What you could do is look at the creating a custom DatabasePager that > overrides the following method: > > /** Merge the changes to the scene graph by calling calling > removeExpiredSubgraphs then addLoadedDataToSceneGraph. > * Note, must only be called from single thread update phase. */ > virtual void updateSceneGraph(const osg::FrameStamp& frameStamp); > > Within this you could add your own tracking of when things are merge or > removed. > > Robert. > > > > On 3 June 2016 at 17:15, Trajce Nikolov NICK > <trajce.nikolov.n...@gmail.com> wrote: > > Hi Community, > > > > I was looking for a way to detect when PagedLOD gets its children paged > > in/out. So I installed an update callback and based on a difference in > the > > children number I was able to know when such change occurred. And this > was > > working with a code an year ago. > > > > Now it doesn't .. Any clue or hint how to detect such changes? > > > > Thanks a bunch as always! > > > > Cheers, > > Nick > > > > -- > > trajce nikolov nick > > > > _______________________________________________ > > osg-users mailing list > > osg-users@lists.openscenegraph.org > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > -- trajce nikolov nick
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